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1) A 5 kg block rests on a flat plane inclined at an angle of 300 to the horizon as shown in the diagram below. What would be the acceleration of the block down the plane assuming the force of friction is negligible?mgsinQ = ma
2) A projectile launched from the ground landed a horizontal distance of 120.0 m from its launch point. The projectile was in the air for a time of 4.00 seconds. If the projectile landed at the same vertical position from which it was launched, what was the launch speed of the projectile? Ignore air resistance.
3) A 5.0kg solid sphere is in free fall near the surface of the Earth. What is the magnitude of the gravitational force acting on the Earth by the solid sphere? The Earth's mass is 5.98×1024 kg
4) A hypothetical planet orbits a star with mass one-half the mass of our sun. The planet's orbital radius is the same as the Earth's. Approximately how many Earth years does it take for the planet to complete one orbit?
5) During a recent winter storm, bales of hay had to be dropped from an airplane to a herd of cattle below. Assume the airplane flew horizontally at an altitude of 180 m with a constant velocity of 50 m/s and dropped one bale of hay every two seconds. It is reasonable to assume that air resistance will be negligible for this situation. About how far apart from each other will the bales land on the ground?
The reel has radius R and moment of inertia I. One end of the block of mass m is connected to a spring of force constant k, and the other end is fastened to a cord wrapped around the reel. The reel axle and the incline are frictionless. The reel i..
a proton moves at a speed of 1605 ms in a direction perpendicular to a magnetic field with a magnitude of 0.58 t. if
A 5.50-mol sample of H2 gas is contained in the left side of the container shown below, What is the entropy change of the gas
A man ties one end of a strong rope 8.20 m long to the bumper of his truck, 0.621 m from the ground, Compute the magnitude of the torque on the tree
A 11.45 Volt battery with internal resistance R1 = 0.1373 is said to be charged by a battery charger that is capable of delivering a current i= 9.7959 Amp. Find the minimum emf the battery charger must be able to supply in order to charger the bat..
A car travelling at 105 strikes a tree. The front end of the car compresses and the driver comes to rest after travelling 0.85. What was the magnitude of an average acceleration of the driver during the collision? State the answer in terms of "'s,..
if a 2.5 kg ball puts 118 joules of energy in a spring with a 614 n/m constant, how far is the spring compressed.
Calculate the energy of a photon required to excite a hydrogen atom from the n = 5 state to the n = 6 state
A 120.0-\Omega resistor, a 60.0-\Omega resistor, and a 40.0-\Omega resistor are connected in parallel and placed across a 12.0-V battery. What is the equivalent resistance of the parallel circuit? What is the current during the entire circuit?
a very long uniform line of charge has charge per unit length 4.74 cm and lies along the x-axis. a second long uniform
The speed of an ion in a particle accelerator is doubled from 0.400c to 0.800c. The initial relativistic momentum of the ion is 4.20 x 10-17 kg·m/s. estimate the final relativistic momentum of the ion
A car traveling 50.7 km/h is 21.9 m from a barrier when the driver slams on the brakes. The car hits the barrier 2.03 slater. (a) What is the car's constantdeceleration magnitude before impact? (b) How fast is the cartraveling at impact?
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